Year Dollars 1992-01-01 61471738 1997-01-01 97504732 2002-01-01 164761999 2003-01-01 79741138 2004-01-01 155378924 2005-01-01 92601344 2006-01-01 104851279 2007-01-01 163745611 2008-01-01 228979647 2009-01-01 201174174 2010-01-01 435922008 2011-01-01 523894585 2012-01-01 278433467 2013-01-01 234568968 2014-01-01 188632967 2015-01-01 198600077 2016-01-01 231739516